Abstract: A puck retaining recess in a plunger of a solenoid valve is formed with a puck retaining lip that is fixed or unified with the plunger. The puck is then radially compressed to fit through a central opening of the retainer lip, and once the puck is pushed past the retainer lip, it is allowed to radially expand within the recess where the puck is retained between a bottom of the recess and the retainer lip. This eliminates many problems that previously occurred with separable retainer lips pressed into position to hold a puck after its insertion into a plunger recess.

Abstract: A swing exerciser especially suitable for golf exercise uses a handle and cord arranged to move a resistance trolley down a track positioned on the golfer's back swing side. A spring and pulley arrangement resists movement of the trolley down the track, and movement of the handle by the golfer through the curve of a golf swing forces the trolley down the track so that the golf exerciser must overcome the resistance while swinging the handle to strengthen the muscles needed for powerfully hitting a golf ball.

Abstract: An applanation tonometer with a replaceable prism for contacting a cornea has emitter and detector ports arranged opposite each other on opposite sides of a longitudinal axis, with the ports aimed at about 45° to the longitudinal axis. Light from an emitter then passes through the emitter port and crosses the prism axis to be incident and reflected from an emitter-reflecting surface of the prism and become incident on the applanation surface. Light reflected from the applanation surface is incident on and reflected from a detector-reflecting surface opposite and parallel with the emitter-reflecting surface to proceed across the prism axis to the detector port. Such an arrangement produces reliable applanation signals and varies the spacial intensity of light reflected from the applanation surface so that the tonometer can automatically distinguish between concentric and eccentric contact of the applanation surface with a cornea.

Abstract: A disposable bag for a liquid shipping container has a multi ply region arranged to be inflated as the bag empties in such a way as to form a sump at the bag bottom for discharge of pumpable material from the sump.

Abstract: A tensioner having screw threads tightened by rotation of a hob drive (15) is used for applying clamping pressure to a hob (10) in a working position in a hobbing machine. The tensioner extends through the hob between the end supports (11 and 12) of the hobbing machine and has threads arranged so that a wrench system can hold part of the tensioner against rotation while the hob drive tightens the threads to a predetermined clamping torque. The tensioner can be a single draw rod (20) extending from driving end support (11), through hob (10), and into threaded engagement with idler end support (12); and the tensioner can include a hob mounting arbor (45) having threaded ends into which a pair of opposed tensioner rods (20 and 46) are threaded.